As in the S.6's of 1929, the plugs fitted to the engines of this year's Schneider Trophy seaplanes were supplied by Lodge Plugs, Limited, of Rugby. Early readers of AIRCRAFT ENGINEERING will remember that a special description by Mr. Alec M. Lodge of the evolution of plugs capable of standing up to the work required of them in engines of high output was published in Vol. I, October, 1929, at page 274. The plug used this year was the Lodge X. 170 made in the firm's model factory at Rugby, the only factory in Europe devoted exclusively to the manufacture of sparking plugs. The exclusive patents and processes used in the making of the special Schneider Trophy plugs, are incorporated in the standard patterns for aircraft.
(1931), "Recent Technical Developments: Some of the Accessories which contributed to the Schneider Trophy Seaplane and Engine Success", Aircraft Engineering and Aerospace Technology, Vol. 3 No. 10, pp. 268-268. https://doi.org/10.1108/eb029467
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